Cummins ISX Single Cam Inframe Engine Rebuild Kit, New (5579461)

Restore Your Cummins ISX Single Cam with a Complete Inframe Rebuild Kit

Is your Cummins ISX Single Cam losing oil pressure, knocking on startup, or burning through coolant? A new inframe rebuild kit from 4BTdiesel gives you the pistons, liners, bearings, and gaskets needed to renew the engine’s wear components without removing it from the chassis, saving the time and expense of a full engine replacement. Every ISX Single Cam eventually reaches the point where a rebuild is the smart move, and the quality of the parts going back in determines how long the engine runs before it needs attention again. Some OE rebuild kits are filled out with reconditioned or take off pieces to hold down cost. 4BTdiesel’s 5579461 kit is built entirely from new parts, manufactured to OEM specifications and tolerances in an ISO 9001 certified facility, so your rebuild starts on solid ground.

What’s Included in the 5579461 ISX Inframe Rebuild Kit

This is one of the most complete inframe kits 4BTdiesel offers for the ISX Single Cam, covering the cylinder, piston, bearing, and gasket components an experienced tech expects to replace during a thorough rebuild.

Cylinder Liner Kits and Piston Kits

Six cylinder liner kits, part numbers 4376391 and 4373362, include the liners themselves along with carbon scraper rings, liner shims, and rectangular ring seals for each cylinder. Six piston kits, part numbers 2882080 and 4376566, pair new pistons with piston ring sets, retaining rings, and piston pins, giving every cylinder fresh compression and oil control from the ground up.

Main Bearing Set, Rod Bearings, and Upper Engine Gasket Set

Rounding out the bottom end, the kit includes a main bearing set, connecting rod bearings for all six cylinders, an oil pan gasket, a bypass valve plunger, a thermostat, and an O-ring seal. On top of that, a full upper engine gasket set covers the seals and gaskets for the cylinder head, valve cover, camshaft cover, intake and exhaust manifolds, turbocharger, thermostat housing, and injectors, so the top end goes back together just as tight as the bottom end.

Fitment Information for the Cummins ISX Single Cam (5579461 / 5405986)

This rebuild kit fits the Cummins ISX Single Cam engine family under CPL/ESN prefix 3719 and cross references to part numbers 5405986, 5473075, ISX108-209, and ISXIF2882080-152. Because rod and main bearings come machined to specific clearances, you will choose a rod bearing size and a main bearing size, Standard, .010, .020, .025, .030, or .050, at checkout to match your crankshaft’s current dimensions. Diesel inframe kits are engine specific, so 4BTdiesel also asks for your engine serial number, VIN, or CPL prefix so the parts team can verify fit before the kit ships, helping you avoid ordering the wrong bearing size for a six cylinder ISX block.

Get Your New Cummins ISX Single Cam Inframe Rebuild Kit from 4BTdiesel

Every 4BTdiesel inframe rebuild kit ships with zero core charge and is backed by a 6-month warranty, well beyond what most aftermarket kits offer. professionally certified factory mechanics are available from the moment you order through final installation, and in stock orders placed by 2 PM EST ship the same day, Monday through Friday. Quality parts, real fitment verification, and a warranty that covers labor as well as parts make this kit a smart way to get your Cummins ISX Single Cam back to work.

FAQs About Cummins ISX Single Cam Inframe Rebuild Kit (5579461)

What does the 5579461 inframe rebuild kit include?

The kit includes six cylinder liner kits with carbon scraper rings and liner shims, six piston kits with piston rings and pins, a main bearing set, connecting rod bearings, an oil pan gasket, a bypass valve plunger, a thermostat, and a full upper engine gasket set covering the manifolds, turbocharger, valve cover, camshaft cover, and injector seals.

Which Cummins engines does this kit fit?

This kit fits the Cummins ISX Single Cam engine family, identified by CPL/ESN prefix 3719. It cross references to OEM and aftermarket part numbers including 5405986, 5473075, ISX108-209, and ISXIF2882080-152.

How do I know which bearing size to order?

Rod and main bearings are machined to specific oversizes that correspond to how far your crankshaft journals have been turned down during prior service. Select Standard, .010, .020, .025, .030, or .050 based on your engine’s actual measurements, and submit your engine serial number, VIN, or CPL prefix so 4BTdiesel can confirm the correct fit before the kit ships.

Is this a new kit or a remanufactured kit?

This is a brand new parts kit, not remanufactured or reconditioned. Every piston, liner, bearing, and gasket is manufactured to OEM specifications and tolerances in an ISO 9001 certified facility.

Does the kit include a core charge?

No. This inframe rebuild kit ships with zero core charge, so there is no deposit to pay and no core to return after the rebuild.

Warranty

6-month warranty.

Why does this kit include both liner kits and piston kits, instead of just liners?

A true inframe overhaul on the ISX Single Cam replaces the entire cylinder pack, not just the liners. Pairing new pistons, rings, and pins with new liners restores correct compression and oil control across all six cylinders, rather than fitting new liners to worn pistons.

How fast will my rebuild kit ship?

In stock orders placed by 2 PM EST ship the same day, Monday through Friday, so your shop can keep the rebuild on schedule.

What Rebuild Kit and Gasket Set Includes